Ward stern



. .2 S heets-Sheet '1. 0. M. TESSIE du M'OTAY 8v 'E. STERN. Process andApparatus for Acceleratihg the Distribution of Gas.

No. 224,311. Patented Feb. 10, 1880.

figure 1.

Nfimmaa' 0 210. #6142425? amt i GAJeZeez/m y 1 w e a N.PETERS. PHOTOUTHOGRAPHER WASHiNGTON D c 2 Sheets-Sheena 0.. M. T'Es sifiiiu MOTAY &E. STERN. Process and Apparatus for Accelerating the Distribution 'ofGas. j

I PatentediFefb. 10, 1880.

UNITED STATES PATENT. OFFICE.

OYPRIEN M. TESSIE DU MOTAY, or PARIS, FRANCE, AND EDWARD STERN,

'oF NEW YORK, N. Y.

PROCESS AND APPARATUS FOR ACCELERATING THE'DlSTRlBUTlQN F GAS.

SPECIFICATION forming part of Letters Patent No. 224,311, dated February10, 1880.

Q Application'filed December 6, 1 878.

To all whom it may concern Be it known'that we, OYPRIEN MARIE TEssIlt DUMOTAY, of Paris, France, and ED- WARD STERN, of the city and State ofNew York, have invented a new and Improved Process and Apparatus forAccelerating and Equalizing the Distribution of Gas in the Pipes ofCities, of which the following is a full, true, and exact description,reference being had to the accompanying drawings.

At the present day the net-workof gas-pipes is so extended in citiesthat the pressure of the gas varies greatly in them. This variation isso great that often at the end of the pipes, where they are most distantfrom the gas-works, the pressure becomesless than one-half, and causesthe gas-delivery to be insuficient for the needs of the city. I

The objectof the present invention is to overcome this difficulty byaccelerating and equalizing the distribution of the gas in the pipes ormains. To this end a circulation is caused through the latter bysuitable apparatus-such as a blower, for example.

Heretofore gas has been propelled through pipes by means of forcing orforcing and exhausting apparatus, in order to deliver a larger quantityat a particular point. Moreover, it is not uncommon to supply in thisway the gas to gasometers, which receive the same from the maingas-works and distribute equalizing the distribution of gas by forcingor causing a circulation through the pipes and mains of a system of asupply of gas in excess of the consumption, and returning the excess tobe circulated again through the pipes and mains, and also in theapparatus, as hereinafter more particularly specified, whereby the saidmethod can becarried into practical effect.

The invention differs essentially from the simple forcin g of gasthrough pipes in order to additional system the same difficulty at firstincrease the delivery at a certain point, for it is evident that theremust be some way of disposing of the excess without allowing it to go towaste, and ifit is to be used to supply an stated would be encountered,and this difficulty would increase as the excess over consumption isgreater. In any event the use of oneor more gasometers would benecessary in addition to-those at the works at which the gas isgenerated, whereas in this invention, while such additional gas-holdersmay, in certain cases, be desirable, they are not essential.

In order more clearly to explain our invention and the manner ofcarrying it into effect, reference is made to the accompanying drawings,which form a part of this specification, and in which both figures areplan views.

Figure 1 represents a system of pipes supplied by a central gas-works,A, which produces the gas and the force to cause it to flow through thepipes. In these works are placed two blowers, V V. The blower V drivesthe gas from the gasometer G and forces it into the distributing-mains.The other blower, V, draws in the gas from the other extremity of themains and forces the excess of the gas into the second gasometer, G.These bl-owersare driven by an engine or engines, M, connected withthem. When the gasometer G is empty, the gasometer G, on the other hand,is full by the excess of gas drawn in. The cross gaspipes shown put theforcing-blower V in communication with the gasometer G, and thedrawing-blower V in communication with the gasometer G. The blowerscanbe run in either direction, thus enabling the movement of the gasforward or backward through the pipes at will. The valves R in the pipesc c enable this operation to be performed and the course of the gas tobe changed.

Fig.2 represents an arrangement using a blower at a local stationdistant from the gasworks. In one of twoadjacent quarters the gas-worksA is placed, and in those works is 5 placed the forcing-blower V, drivenby an engine, M, which drives the gas out into the conduits. In theother quarter are the works A, for the purposebf receiving anddistributing the gas, but not making it.. The blower I00 V there shownmay be actuated by an independent engine, but preferably by anair-engine driven from the works- A. The blower V draws the gas held intheholder G and forces it through the part of the city served by theworks A. The excess of the gas is driven into the holder G and theblower V in its turn drives out the gas from the holder G in the secondquarter served by the works A. The excess of gas from the quarter servedby the works A is returned to a holder, from which, when full, the gasis forced by the first blower, V. It is obvious, however, that acomplete circulation might take place in each quarter, the gas insuflicient quantities for supplying the amount consumed being taken fromthe mains by which the first quarter is served, or from the gas-holdersat the works A.

One of the advantages of our system is to allow of the utilization ofthe mains to supply in winter the additional demand necessitated by theburning of the gas at that time.

What we claim as our intention, and desire to secure by Letters Patent,is

l. The method of accelerating and equalizing the distribution ofgas,which consists in causing a circulation of the gas from the gasworksthrough the pipes or mains in excess of the consumption which takesplace on the line of said pipes or mains, and is supplied therefrom, andreturning the excess to the said works for circulation again through thepipes or mains, substantially as described.

2. The combination, with a system of gas pipes or mains, of a forcingapparatus connected with one end of said system and with a suitablesource of gassupply, for forcing gas through saidpipes or mains,andareturn-pipe connected with the opposite end of said system, forreturning gas supplied in excess of 40 J. ARMENGAUD, J eune, A. CABY.

